According to Trend Micro, the virus will download another virus,
known as Rbot.
Rbot is detectable with HijackThis and there are removal tools for
it.
The computer won't crash, mainly because of money. If you do
e-banking, the hackers would want this info. They won't do anything
to crash it.
There's no harm done to the PC, except that the PC is now used for
stealing information.